gore.m on "Custom-logo / SVG / dimensions ?"

Did I fault if logo.SVG HTML output has no dimensions?

SVG support:

function svg_upload ($svg_mime) { $svg_mime['svg'] = 'image/svg+xml'; retu $svg_mime;
}
add_filter( 'upload_mimes', 'svg_upload' );

Custom logo support:

add_theme_support( 'custom-logo', array( 'height' => 38, 'width' => 162, 'flex-height' => true, 'flex-width' => true, ));

Im using customizer to upload logo. Why are dimensions ignored? If I take a look to other sites that use logo.SVG, <img> include dimensions.

Thanks you